Sota Takanashi, who loves all things small, one day got invited to work at the family restaurant WAGNARIA by Popura Taneshima, an upperclassman at school.

There, he discovered all kinds of eccentric characters that turned his working experience into something unexpected. What kind of dangerous comedy awaits Sota and his coworkers at WAGNARIA today?
On his day off, Sota receives a call from someone called "Minegishi." Claiming to be under the order of Sota's mom, "Minegishi" is snooping around for information. Back at WAGNARIA, Sato finally musters up the courage to ask Yachiyo out on a date, but Yachiyo starts acting weird after that. Meanwhile, Sota and Mahiru's relationship is at an awkward stage after Sota said something.

Seeing this happening, Sota's sister Izumi decides to do something about it.
And finally, Yamada reveals the truth about her running away...